Following the suicide of a soldier in Afghanistan who had allegedly been bullied, Joint Chiefs of Staff Chairman Gen. Martin Dempsey is speaking out against hazing in the U.S. military, calling the acts of misconduct “simply intolerable.”

In a short message on Facebook, Dempsey said late Thursday that officials are in the process of investigating several allegations of hazing in the military, which he added appear to be “isolated instances of misconduct.”

“I want to be very clear — hazing is simply intolerable,” he wrote. “It undermines our values, tarnishes our profession, and erodes the trust that bonds us. This cruel form of misconduct requires an audience to achieve its intended effect of humiliation.”

Dempsey’s warning comes shortly after the Army announced thateight American soldiers are facing charges and have been transferred following allegations that they mistreated a comrade before he committed suicide in Afghanistan. The relatives of Army Pvt. Daniel Chen, 19, alleged that Chen was subject to name calling and hazing during training, The Associated Press reported earlier this week.